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Four green DDR4 memory sticks without heat spreaders

Computer Memory Solutions

Computer Memory Solutions 32GB (4x8GB) DDR4 2400 CL17 ASRock Z390 memory upgrade

SKU CH-4NYK-RQ7JT

32 GB kit of four 8 GB DDR4-2400 CL17 DIMMs validated for ASRock Z390 Phantom Gaming SLI/ac, Pro4 and Taichi boards

  • Total capacity32 GB (4 × 8 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL17
  • Memory timings17-17-17
  • Rated voltage1.2 V
  • 32 GB total capacity across four 8 GB modules
  • 2400 MHz DDR4 speed rated at PC4 19200
  • CL17 latency with 17-17-17 timing
  • 2 V unbuffered non-ECC DIMM design
  • Guaranteed compatibility with ASRock Z390 Phantom Gaming SLI/ac, Pro4 and Taichi

32 GB DDR4 kit for ASRock Z390 boards

This 32 GB kit contains four 8 GB unbuffered DIMMs rated at DDR4 2400 with CL17 timings and 1.2 V operation. It targets builders upgrading an ASRock Z390 Phantom Gaming SLI/ac, Pro4 or Taichi motherboard to the platform's 64 GB maximum capacity.

DDR4 2400 bandwidth ceiling on Z390

The Z390 memory controller officially supports DDR4 2400 without overclocking, so this kit runs at the highest guaranteed JEDEC speed for the platform. Faster modules will drop to 2400 unless the BIOS enables XMP and the silicon allows it, which is not assured on every board.

Four-slot population requires matched kit

Installing all four sticks fills every DIMM slot on the supported boards, so a single matched 4 x 8 GB kit avoids timing mismatches that cause boot failures. Mixing with existing modules often forces the system to run at lower speeds or prevents POST entirely.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $140.99
Cheaper than about 63% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (4 × 8 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $4.41 per GB
Cheaper than about 82% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM1024642400DIMM
Total capacity32 GB (4 × 8 GB)
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2400 (PC4 19200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL17
Memory timings17-17-17
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock Motherboard Z390 Phantom Gaming SLI/ac, Motherboard Z390 Pro4, Motherboard Z390 Taichi
In the box
Included items4 Memory RAM Sticks

Questions about this item

Should I pick the 32GB four-stick kit or a different capacity for my Z390 board?

This kit provides 32GB across four 8GB modules, filling all four DIMM slots on the Z390 Phantom Gaming SLI/ac, Pro4 or Taichi. The board maximum is 64GB, so if you need more capacity later you would have to replace the entire kit.

What does the DDR4 2400 speed rating mean once the modules are installed?

The memory runs at 2400MHz with CL17 timings (17-17-17) at 1.2V, delivering PC4 19200 bandwidth. The Z390 chipset will operate the kit at this rated speed without manual overclocking.

Does the 288-pin DDR4 interface limit anything on these ASRock Z390 boards?

The 288-pin DDR4 DIMMs fit the four native slots on the Z390 Phantom Gaming SLI/ac, Pro4 and Taichi. The platform caps total memory at 64GB and runs the kit at its rated 2400MHz CL17 without further restriction.

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